This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of following embryonic germinal tissue layers form all tissues and organs? 1. Endoderm 2. ... (Read 69 times)

haleyc112

  • Hero Member
  • *****
  • Posts: 600
on: Jul 16, 2018
Which of following embryonic germinal tissue layers form all tissues and organs? 1. Endoderm 2. Mesoderm 3. Ectoderm 4. Mectoderm
 
  a. 2 only
  b. 2 and 3 only
  c. 1, 2, and 4 only
  d. 1, 2, and 3 only

Question 2

If premature delivery is anticipated, all of the following will help determine lung maturity, ex-cept:
 
  a. the presence of oligohydramnios.
  b. lecithin-sphingomyelin (L:S) ratio.
  c. phosphatidylglycero l (PG) concentration.
  d. body mass index (BMI).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Viet Thy

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
The three embryologically distinct germinal tissue layers form all tissues and organs: endoderm, mesoderm, and ectoderm.

Answer to Question 2

ANS: D
Quantification of these phospholipids (the L/S ratio and PG concentration) provides a predictive index of the lung maturity in the fetus before birth and the risks of the development of respira-tory distress. For example, an L/S ratio of 2 or more indicates a relatively low risk for the devel-opment of respiratory distress syndrome while an L/S ratio of less than 1.5 is associated with a high risk. Conditions that lead to reduced fetal breathing and amniotic fluid formation (oligohy-dramnios) are linked to incomplete inflation of the lung with fluid and poorly developed (hypo-plastic) lungs.


haleyc112

  • Hero Member
  • *****
  • Posts: 600
Reply #2 on: Jul 16, 2018
TY


Viet Thy

  • Sr. Member
  • ****
  • Posts: 329
Reply #3 on: Jul 16, 2018
Happy to Help


« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Layers are deposited parallel to Earth’s surface. Younger layers are deposited on top of older layer Layers are deposited parallel to Earth’s surface. Younger layers are deposited on top of older layer
Two wells are filled with different antigens and when they diffuse, they form lines that cross which ... Two wells are filled with different antigens and when they diffuse, they form lines that cross which ...
Chinese Barber Performing a Form of Percussion on a Seated Patron in China in the 1790s. Chinese Barber Performing a Form of Percussion on a Seated Patron in China in the 1790s.
The 4 Tissue Types The 4 Tissue Types
Embryonic Period Embryonic Period
Embryonic Period Embryonic Period
Video: Four Giant Convection Cells oF Earth

For a complete list of videos, visit our video library